Αποτελέσματα Αναζήτησης
13 Ιουν 2023 · FTP Server (FTP Traffic-In): This opens port 21, which is required for the control channel to transmit FTP commands. FTP Server Passive (FTP Passive Traffic-In): This defines the port range for the client to establish the data connection. FTP Server Secure (FTP SSL Traffic-in): FTP over SSL uses TCP port 990, and this rule opens it.
To know exactly what ports you will need to open, you will need to either: a) talk to the vendor to get specifics about how their system has been configured. b) Use a protocol analyzer, such as tcpdump or wireshark, to look at the traffic, both from outside your firewall and inside your firewall.
22 Σεπ 2021 · To address this issue, SFTP was introduced, which handles all communication for control and data channels over port 21, which allows for both security through encryption, and predictable port assignment to make it easier for firewalls to manage.
5 Μαρ 2024 · FTP uses port 21 for control connections and port 20 for data connections. FTPS uses port 990 for control connections and port 989 for data connections under implicit security. When using explicit security, FTPS can also use port 21. Learn more about securing an FTP or SFTP server on our blog.
For firewalls configured to permit a specific range of ports, such as in passive mode, FTPS should operate without issues. To configure for passive FTP (the preferred method), see My IP address begins with 192.168.xxx.xxx.
21 Σεπ 2022 · Solution. Technical terms are explained in relation to what firewall ports need to be open to allow the traffic. FTP - File Transfer Protocol: uses TCP port 21 for command and TCP port 20 for data transfer.
18 Απρ 2024 · Our three best practices for FTP server port management include port forwarding, passive mode, and active monitoring of dynamic ports.
